Tabla de isotopos

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Table of Isotopic Masses and Natural Abundances
This table lists the mass and percent natural abundance for the stable nuclides. The mass of the longest lived isotope is given for elements without a stable nuclide. Nuclides marked with an asterisk (*) in the abundance column indicate that it is not present in nature or that a meaningful natural abundance cannot be given. The isotopic mass datais from G. Audi, A. H. Wapstra Nucl. Phys A. 1993, 565, 1-65 and G. Audi, A. H. Wapstra Nucl. Phys A. 1995, 595, 409-480. The percent natural abundance data is from the 1997 report of the IUPAC Subcommittee for Isotopic Abundance Measurements by K.J.R. Rosman, P.D.P. Taylor Pure Appl. Chem. 1999, 71, 1593-1607.
Z Name Symbol Mass of Atom (u) % Abundance Z 15 1 Hydrogen Deuterium Tritium
1 2 3Name Phosphorus

Symbol
31

Mass of Atom (u) 30.973762

% Abundance 100

P

H H H

1.007825 2.014102 3.016049

99.9885 0.115 * 16 Sulphur
32 33 34

S S S S

31.972071 32.971458 33.967867 35.967081

94.93 0.76 4.29 0.02

2

Helium

3 4

He He
6 7

3.016029 4.002603

0.000137 99.999863 17 Chlorine

36

35 37

Cl Cl

34.968853 36.965903

75.78 24.22

3Lithium

Li Li

6.015122 7.016004

7.59 92.41 18 Argon

36 38 40

Ar Ar Ar

35.967546 37.962732 39.962383

0.3365 0.0632 99.6003

4

Beryllium

9

Be

9.012182

100

5

Boron

10 11

B B

10.012937 11.009305

19.9 80.1 19 Potassium
39 40

K K K

38.963707 39.963999 40.961826

93.2581 0.0117 6.7302

6

Carbon

12 13 14

C C C

12.00000013.003355 14.003242

98.93 1.07 * 20 Calcium

41

40 42

Ca Ca Ca Ca Ca Ca

39.962591 41.958618 42.958767 43.955481 45.953693 47.952534

96.941 0.647 0.135 2.086 0.004 0.187

7

Nitrogen

14 15

N N

14.003074 15.000109

99.632 0.368

43 44 46

8

Oxygen

16 17 18

O O O

15.994915 16.999132 17.999160

99.757 0.038 0.205 21 Scandium

48

45

Sc

44.955910100

9

Fluorine

19

F

18.998403

100

22

Titanium

46 47

Ti Ti Ti Ti Ti

45.952629 46.951764 47.947947 48.947871 49.944792

8.25 7.44 73.72 5.41 5.18

10

Neon

20 21 22

Ne Ne Ne

19.992440 20.993847 21.991386

90.48 0.27 9.25

48 49 50

11

Sodium

23

Na

22.989770

100

23

Vanadium

50 51

V V

49.947163 50.943964

0.25099.750

12

Magnesium

24 25 26

Mg Mg Mg

23.985042 24.985837 25.982593

78.99 10.00 11.01 24 Chromium
50 52 53

Cr Cr Cr Cr

49.946050 51.940512 52.940654 53.938885

4.345 83.789 9.501 2.365

13

Aluminum

27

Al

26.981538

100

54

14

Silicon

28 29 30

Si Si Si

27.976927 28.976495 29.973770

92.2297 4.6832 3.0872

25

Manganese

55

Mn54.938050

100

26

Iron

54 56

Fe Fe

53.939615 55.934942

5.845 91.754

Z

Name

Symbol
57 58

Mass of Atom (u) 56.935399 57.933280

% Abundance 2.119 0.282

Z

Name

Symbol

Mass of Atom (u)

% Abundance

Fe Fe

38

Strontium

84 86

Sr Sr Sr Sr

83.913425 85.909262 86.908879 87.905614

0.56 9.86 7.00 82.58

27

Cobalt

59

Co58.933200

100

87 88

28

Nickel

58 60 61 62 64

Ni Ni Ni Ni Ni

57.935348 59.930791 60.931060 61.928349 63.927970

68.0769 26.2231 1.1399 3.6345 0.9256 40 Zirconium
90 91 92

39

Yttrium

89

Y

88.905848

100

Zr Zr Zr Zr Zr

89.904704 90.905645 91.905040 93.906316 95.908276

51.45 11.22 17.15 17.38 2.80

29

Copper

63 65

Cu Cu

62.929601 64.92779469.17 30.83

94 96

30

Zinc

64 66 67 68 70

Zn Zn Zn Zn Zn

63.929147 65.926037 66.927131 67.924848 69.925325

48.63 27.90 4.10 18.75 0.62

41

Niobium

93

Nb

92.906378

100

42

Molybdenum

92 94 95 96

Mo Mo Mo Mo Mo Mo Mo

91.906810 93.905088 94.905841 95.904679 96.906021 97.905408 99.907477

14.84 9.25 15.92 16.68 9.55 24.13 9.63

31

Gallium

69...
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